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CHAP 1: CALUCULATING AND PRESENTING DATA Flashcards

(31 cards)

1
Q

(In terms of data) DEFINE qualitative.

A

Measured by qualities/Descriptive of object rather than number.

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2
Q

(In terms of data) DEFINE quantitative.

A

Is able to be measured numerically.

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3
Q

(In terms of data) DEFINE continuous.

A

Contains decimals and is in a specific measurement.

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4
Q

(In terms of data) DEFINE discrete.

A

Is a whole number.

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5
Q

(In terms of data) DEFINE categorical.

A

Is not numerical and has categories.

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6
Q

(In terms of data) DEFINE nominal.

A

Data that cannot be ordered.

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7
Q

(In terms of data) DEFINE ordinal.

A

Data that can be ordered.

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8
Q

(In terms of data) DEFINE bias.

A

An outlying variable within data.

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9
Q

(In terms of data) DEFINE frequency.

A

The number of times the specific data occurs.

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10
Q

(In terms of data) DEFINE distribution table.

A

Summarised values and their frequencies in a table.

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11
Q

(In terms of data) DEFINE class centre.

A

The addition of the ranges in grouped data (highest + lowest no.) divided by 2.

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12
Q

(In terms of data) DEFINE grouped data.

A

Bundled data shown as a range. (Even amount of data over all groups).

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13
Q

(In terms of data) DEFINE mode.

A

The most frequent number in a set of data.

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14
Q

(In terms of data) DEFINE mean.

A

The average of all the data combined.

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15
Q

(In terms of data) DEFINE median.

A

Ordered datas middle number.

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16
Q

(In terms of data) DEFINE range.

A

The highest number minus the lowest number.

17
Q

(In terms of data) DEFINE interquartile range.

A

Q1 - median between lowest number and Q2.
Q2 - median of complete data.
Q3 - median between highest number and Q2.

18
Q

(In terms of data) DEFINE census.

A

Data collected over a whole population.

19
Q

(In terms of data) DEFINE sample.

A

Data collected over part of the population.

20
Q

(In terms of data) DEFINE observation.

A

Numerical facts are viewed, collected and tabulated.

21
Q

(In terms of data) DEFINE stratified sample.

A

Population is broken into categories, data is then collected from a sample of each category.

22
Q

(In terms of data) DEFINE random sample.

A

All members of the population have equal chance of selection.

23
Q

(In terms of data) DEFINE systematic sample.

A

Population is divided into structured samples. (Such as every second person).

24
Q

(In terms of data) DEFINE self-selecting sample.

A

The individuals choose to be part of the data collection.

25
(In terms of data) DEFINE class interval.
A range of grouped data.
26
(In terms of data) DEFINE cluster.
When a high frequency of data is gathered around a certain value.
27
(In terms of data) DEFINE population.
The complete amount of people in a certain area/event/country/community.
28
(In terms of data) DEFINE statistics.
The branch of mathematics that deals with the collection, organisation, analysis and interpretation of data.
29
(In terms of data) DEFINE survey.
A list of questions to gather information/data among individuals/groups.
30
(In terms of data) DEFINE outliers.
A value that is much smaller or larger than the rest of the data. Q1 - 1.5 x IQR (lower). Q3 - 1.5 x IQR (higher).
31
(In terms of data) DEFINE modal class.
Highest occurring class.